Metallurgical vessel.



nnrrnn AUGUSTIN L. J. QUENEAU, OF

O UOIviPANY, OF NEW YORK, N. Y.,

A CORPORATION OF NliiVl JERSEY.

n ceases.

Specification of Letters Faten VESirElElM Eatented Dec. 4, 1906.

Original application filed May 21, 1904, Serial lilo. 209,138. Divided and this applicationiiled April 18,1905. Serial No 256,295.

To all whom it may concern:

Be it known that I, AUG'USTIN L. J. QUE- NEAU, a citizen of the Republic of France, residing at South Bethlehem, county of Nortlu amptcn, State of Pennsylvania, have in- "vented certain new and usciullniprova ments in Metallurgical Vessels; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

In Letters Patent of the United States'No. 789,451, dated May 9, 1905, I have described the roduction of metallurgical vessels by a met od therein set forth a l claimed, said method, briefly stated, consisting in supplying a press-mold with a composite wad made up of contiguous hammered wads of different Compositions and then compressing the constituent wads into intimate and ohomogeneous contact to form the completed vessel.

I referably make use of the same method for t production of the nietallurg cal vessel described in the presentapplication, which vessel consists of a portion or layer having as one of its constituents graphite or sonic other carbonaceous substance and having an outer layer of a material which will protect the carbonaceous element from the oxidizing action of the products of combustion to which the meta lurgical vessel is subjected during the ln ln-teroperlng operation and du 1'-- ing its subsequent use for metallurgical purposes. I

The accompanyingdrawing illustrates in cross-section's metallurgical vessel enibodying my invention.

Referring to the drawing", 1) indicates the portion of the metallurgical vessel containing the carbonaceous element, which may be,'for instance, in the form of finely coinniinuteu graphite suitably mixed with fire-clay and sand to form the desired wad or which may consist of some other material containing carbon (either alone or in combination) of such character that the oxidizing action of roducts of combustion would tend to burn it out,leaving'the outer surface in a pitted or porous condition. To prevent this pitting of the carbonaceous portion of the metallurgical vessel, 1 provide the vessel with an interior layer 0 of fire-clay and sand and an exterior layer a of like protective material. The inner layer may conveniently be relatively thin, as illustrated in the drawing, for the reason that its function is to protect the in terior of the vessel during the kiln-tempering operation, at w ich time the oxidizing products of combustion not only play around the outside of the vessel, but also enter its interior. The subsequent use of the vessel in metallurgical operations is usually restricted to conditions wherein only the exterior surface of the vessel is subjected to the action of products of combustion, and for this reason I p; eierably make the exterior protective coating of considerably-inorcased thickness, so as to insure its greater durability. It will also be understood that in some instances I'm'ay omit the inner coating of protective material where the particular conditions of kiln-tempering or the character of the carbonaceous mixture employed render the danger of itti'ng on the interior surface of the vesse of less importance.

It will of course be understood that I do not confine myself to coniminuted graphite as the carbonaceous element of the protected layer, but intend. to include other forms of carbon or carbonaceous compounds whose oxidation by the products of combustion would leave the layer in a pitted condition if unprotected.

having thus described my invention, what i clann is 1. A metallurgical vessel, whose walls are made up of a layer containing carbon as one or its constituents, and an outer layer of a material adapted to protect the carbon from the oxidizing action of the products of combustion, said outer protective layer being ap' material adapted to protect the carbon from layerof fire-clay lend sand; substantially as the oxidizing action of the products ofcomdescrlbed. 1'0 bustion, said outer protective layer being ap- In testimony whereof I afiix my signature plied to the exterior of the vessel; substanin presence of two Witnesses. 5 tially as described. I 3 AUGUSTIN L. J. QUENEAU.

3. A metallurgical vessel, whose Walls are Witnesses: made up of a layer consisting of comminuted FRANCIS S. MAGUIRE,

graphite, fire-clay and sand, and a protective JOHN C. PENNIE. 

